package com.changgou.file.controller;

import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import com.changgou.file.util.FastDFSClient;
import com.changgou.file.util.FastDFSFile;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/file")
public class FileController {

    @PostMapping("/upload")
    public Result uploadFile(MultipartFile file){

        try{
            //判断文件是否存在
            if (file == null){
                throw new RuntimeException("文件不存在");
            }

            //获取文件完整名
            String originalFilename = file.getOriginalFilename();
            if (StringUtils.isEmpty(originalFilename)){
                throw new RuntimeException("文件不存在");
            }

            //获取文件扩展名
            String extName = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);

            //获取文件内容
            byte[] content = file.getBytes();

            //封装实体类
            FastDFSFile dfsFile = new FastDFSFile(originalFilename, content, extName);

            //工具类文件上传
            String[] uploadfile = FastDFSClient.upload(dfsFile);

            //封装返回结果,
            String url = FastDFSClient.getTrackerUrl()+uploadfile[0]+"/"+uploadfile[1];
            return new Result(true, StatusCode.OK,"文件上传成功",url);


        }catch (Exception e) {
            e.printStackTrace();
            return new Result(false, StatusCode.ERROR, "文件上传失败");
        }
    }
}
